Material Specs

[stressmerchant]

I hope this is the right forum for this question.

I'm looking for the specifications of materials used in wartime American aircraft, such as the C-47. My documents list grades such as 24SO, 24 ST and so on. I have strength figures for these materials, and I have figures for the modern materials (eg 2024-T3), but I have no way of linking the types. To confuse things, even the 24SO seems to have different specs (AN-XX, QQ-xx, etc)

Is there a reference that gives equivalences between the early and later specs?

Thanks in advance